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Monday, October 1, 2018
Question:
Continuous lighting loads in a commercial building shall be calculated at what percent of the total VA or amperage rating of the branch circuit?
Michael Gomes
A
Answer:
Hey Michael thanks for your question. The branch circuit load is actually calculated at 100 % based on the volt-amperes per square foot as stated in 220.12. The conductor and overcurrent device must be sized based on 125% of the continuous load as stated in 210.19 and 210.20. For conductors that value is compared with the 100% value with any applicable adjustment or correction factors applied as stated in 210.19(A)(1).